Sony Offers a "Premium Sound" SD Card For a Premium Price 213
nateman1352 (971364) writes "Don't you just hate all that noise your memory cards make? No? Then you probably aren't going to want to buy Sony's new $160 memory cards, which the company brags offers "Premium Sound" that generates less electrical noise when reading data." As long as it works well with my hi-fi ethernet cable.
I'll take 10! (Score:2)
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That's not even limited to ancient gear. My old PC at work did that, and it had a dual core processor so it wasn't _that_ old. It was kind of a weird long drawn out high pitched "dragging" sound.. very annoying.
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I had one 'delightful' system where the lousy onboard sound chip was apparently using the CPU clock as a timebase, despite the system being new enough that dynamic clock speed adjustment had been routine for several
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You should have demanded your money back. You let the bastards get away with it and not only did they not fix it, they cripled the CPU freq scaling as a "fix".
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It was one of those situations where the villains skated free; but the number of hours it would have taken on the phone, fighting it out between t
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Well, that depends (Score:2)
I see they have gold colored print [wordpress.com], that has to boost the sound quality by about 10 bucks. But is Monster selling titanium-plated connectors for them yet? Have any advertisers signed up to preload audio advertisements on the cards? This doesn't seem ready for prime time. Sony, give me a call just as soon as you're ready to start charging me a monthly fee!
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But is Monster selling titanium-plated connectors for them yet?
No, but you might not need them.
Sony is including a green felt marker to paint he edge of your SD card for only $20 extra!
I have dark confession (Score:4, Funny)
... you judged me anyways! But I got it on Going Out of Business Sale! For 5$ out of a bin! I had to! You too would buy one for $5. They sell them for hundreds to fools!
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Monoprice hdmi cables are also gold plated and are 3-5 bucks on a normal day anyway.
Re:I have dark confession (Score:5, Informative)
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They sell them for hundreds to fools!
And they sell $5 cables to fools who really think it's gold.
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It is real gold. But gold has a lot of interesting properties such as:
- Even low grade gold such as 8-10k is very corrosion resistant. You don't find 24k gold in electronics.
- Gold can be melted down and coated in very VERY thin coats. Typical electronic connectors have a coating around 1 micron thick.
Estimates for the amount of real gold in terms of pure gold cost in a typical cellphone range from $0.30 - $1. With gold coatings on most connectors, and even the non-silkscreened area of the circuit board. Th
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I have a lot of audio patch cords that clearly come from the same factory as the Monster cables, just with a "DaytonAudio" label instead, that sold for $3-5. It's not like they bad cables or anything. I can't match your price though.
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I've bought a bunch of Monster cables for around that price, only because that was all they had on sale. Basically a store that bought up a bunch of overstock and sold it at huge discounts in original sealed Monster packaging.
They are nice cables since they don't snag nor have i
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I got a bunch of Monster video and audio cables, with really nice machined, gold plated RCA ends. They're great, mostly because they were also free out of a dumpster in back of a Best Buy. (I was there looking for a large piece of cardboard for a project)
Niiiice
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If the connectors aren't gold plated, you risk corrosion damaging them.
Re:I have dark confession (Score:4, Interesting)
So do I. There's reasons to go for gold plating. None of them have to do with superior picture but the gold plating is corrosion resistant.
The only time you don't find gold plating a prevailing option in equipment is on self wiping connections. The type which scrape the surface during the plug / unplug cycle. In those cases you'll often find some kind of cheap silver coating, where silver tarnish is still more conductive than many forms of tin/copper corrosion.
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I can do better than that, I own two gold-plated MONSTER DVI CABLES. But wait, I got them at the grocery outlet for $5/each. And they have neato braided jacketing that doesn't hang up on other cables.
Anyway, gold-plated connectors do seem to corrode less, and in real-world home environments there's often quite a bit of moisture. I'll take what protection I can get.
Noise? (Score:2)
Snake oil (Score:5, Informative)
First of all, let me start by saying I'm sure, just like everyone else, that these devices have no practical effect on the audio produced by pretty much any practical system. That said, people seem to be confused about the nature of noise in a system.
As the story correctly notes, digital systems are inherently noise resistant, and often include error correction. There is no SD card or cable in the world that will help improve digital transmission if all the data is already being successfully transmitted. However, analog systems are susceptible to noise. In fact, a significant amount of analog design is dedicated to dealing with noise. In addition to random noise, which is introduced by thermal movement or other random processes in the devices, analog signals are also susceptible to interference, or other nearby signals which can corrupt the analog signal. Nearby electromagnetic fields can couple to analog traces on the board, degrading performance. A significant effort goes into carefully routing and shielding analog traces, as well as moving sources of interference further away.
High speed digital systems are a large source of interference. The fact that digital systems involve several wires switching at "full swing" at high frequency means that it produces a comparatively large electromagnetic field in the immediate vicinity. Again, a significant effort goes into keeping digital and analog components apart from each other in high quality audio systems. If your analog trace goes next to a memory running at hundreds of MHz, it will effectively increase the noise floor of your audio.
It is conceivably possible that Sony actually did design an SD card which generates less electromagnetic interference (EMI). This could conceivably lessen the amount of interference coupled into an audio signal somewhere. That said... it's not going to make any difference in reality. If the SD card noise was having a practical effect on your audio then the whole systems was crap to begin with. So, as I think everyone in this thread can agree, this is snake oil.
Re:Snake oil (Score:5, Informative)
You're an analog designer.
Imagine how much EMI comes from 5 single ended lines switching at 1.8V at 208MHz.
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I see 3 possible sources for your problem:
a. the MP3 player is badly designed. There should be sufficient capacitance to smooth the power level out to within a few percent of standard even at full read or write. Alternatively the audio traces could be routed too close to the data lines or the designer for the DAC may have had a bad day.
This means that the MP3 player was cheap enough that the designers weren't allowed the time to test their design properly.
b. Your ears are magnificent. That would cause you t
It's usually a. (Score:2)
a. the MP3 player is badly designed. There should be sufficient capacitance to smooth the power level out to within a few percent of standard even at full read or write. Alternatively the audio traces could be routed too close to the data lines or the designer for the DAC may have had a bad day.
This means that the MP3 player was cheap enough that the designers weren't allowed the time to test their design properly.
Let's face it - from the Quality-Cheap-Quick triangle (pick any two) 'a' covers TWO possibilities.
Meaning that it will ALWAYS be present in anything you can purchase with money alone without waiting for years for someone to design and build and test it specially, just for you.
And no... paying premium MONEY for design is not the solution.
Only premium TIME spent on design-testing-redesign-retesting... counts for something.
So one ends up with an overpriced AND outdated 128MB player that plays their 64 bps MP3s
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Let's say you have a 2V p-p signal, pretty common "line level" audio. You have a bog standard 16 bit DAC generating that signal. 1 LSB causes a change of around 30uV. In a typical consumer audio system if you have less than 30mV of noise you are doing pretty well.
Sony are selling a player capable of 24 bit audio playback, which is known as HD audio. It's becoming popular in Japan. Now 1 LSB is only about 120nV. Nanovolts.
You are reading music from an SD card. The SD card has a digital interface, with digita
that's peanuts compared to the tweakers (Score:2)
$160 for a memory card may be exorbitant, but at least it is a memory card and does something useful.
while checking for reviews on audio gear (i do appreciate well designed hifi) i saw this review for what looks like a 4" x 6" plastic slab.
http://www.stereotimes.com/post/bybee--quantum-signal-enhancer/
now i have no idea what 'Crystal Technology' is or how it's supposed to work. i'd love it if someone took one of these things and sliced it open to find out what's inside. i suspect it's just a piece of solid
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Audiophiles are clearly idiots. A rich seam of idiots with a lot of money that companies specialise in exploiting by selling expensive tat to.
As for this Sony thing, the impression appears to be it would offer absolutely no benefit whatsoever to playback though I guess it's conceivable that recording artists and the like would find a use for it if it reduces radio interference when they're trying to record something.
Audiophile Alert (Score:4, Funny)
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And it is even better if you run a green magic marker around the edge of your ears. And your eyes too for extra credit.
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I suggest using a red magic marker for the eyes. It will give a warmer appearance to your audio listening activities.
Lesson learned from VITA cards? (Score:2)
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What is inexcusable is the fact that they decided to spin an entirely new format for that purpose,
This is NOT a scam (Score:3, Informative)
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No, it is a scam. You would have to be working with shit equipment for electrical noise from an SD card to contribute anything meaningful to the quality of your audio playback/recording.
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No the reddit comment doesn't explain it at all. It is bullshit. Any audio equipment of such low quality as to allow such interference from the SD Card would have so many other problems as to make the SD part insignificant. Any quality equipment where sound matters isn't going to be suffering from such a fatal design flaw.
Could happen (Score:3)
Way back in the day when early digital anything had gobs of TTL and CMOS gate chips I would use a telephone pickup coil to hunt down dead chips.
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How did you go about that? It sounds like EVP for chips?
https://en.wikipedia.org/wiki/... [wikipedia.org]
I'm pretty sure it's irrelevant (Score:3)
I'm pretty sure any power-line noise from a memory card is dwarfed by the poor sound quality of the chip amps used on most portable audio devices.
As to non-portable devices, the noise of case and laptop fans and even the chirp of hard drives seeking drown out any "feedback noise" I get even from the chip amps used in my computers to drive the speakers. While I do spring for low-dB fans whenever I'm replacing them, they still produce an emphatic whoosh in the background no matter how good they are.
Whan I want to really listen to music, I far prefer my Sony noise-cancelling ear-cup headphones to using speakers. Ambient noise in this place is just too high to really enjoy music any other way. And I suspect the same is true of most homes that don't have dedicated sound rooms with thousands of dollars invested in baffling, damping, and so forth.
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I'm pretty sure any power-line noise from a memory card is dwarfed by the poor sound quality of the chip amps used on most portable audio devices.
Yes and no. If your amplifier is taking a microwatt-level signal and turning it into a milliwatt-level signal, you're also amplifying any noise by a factor of 1000 or more. GIGO comes to mind; now, your low-quality chip amp might put out garbage either way, but at least you can filter out some of the smellier stuff, if you catch my drift.
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I just bought a Sony Xperia Z3 phone. The sound amp chips on that phone are very high quality.
Honestly, the concept of a "Sony" audiophile SD card is tempting, for two reasons:
I did get a 128GB card for my phone. If there was a Sony Audiophile card available, and it was only 20-30% more expensive tha
well (Score:2)
Spool up to RAM (Score:2)
Do I need this if I can spool up the entire audio file to RAM before playing? It might be annoying to have such a delay for playback though. For recording it seems like less of a problem as long as your audio buffer is very large. Rough estimate is a 4 track at 196 kHz 24-bit would eat 1GB ever 7.7 minutes. So maybe 16 GB of RAM needed to buffer a 2 hour session (really bare minimum to be practical in my opinion). Seems like it's possible now but what kind of noise does a 64-bit ARMv8 and 16 GB of LPDDR4 ad
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The only people who need their audio to be this clean are people who are recording it, and they will get quiet audio by using an external sound card.
Mayby not as bullshit as it sounds... (Score:2)
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The SD controller is inside the SoC, so you need to add filtering someplace, you can't just isolate the circuit. But nothing you do to the SD card will improve the DAC, which is the real reason why most portable audio hardware blows. The DAC itself introduces more distortion than you get from device noise, so who cares?
It's right up there with platinum plated RCA cable (Score:2)
and with $60 HDMI cables.
Looking for noise? Start at the mic. (Score:5, Insightful)
So, let me get this straight. A "professional" pop artist today walks into a studio to drop a track, which is then Autotuned, excited, boosted, compressed, and otherwise destroyed by post-processing...
...and we're now worried about macro-levels of electrical noise coming from the memory card?
Perhaps we should worry more about what we define as an "artist" these days.
Big Market for these (Score:2)
They used PT Barnum for their marketing analysis: (paraphrased) "There is a potential customer born every minute."
Re:Hmm, maybe (Score:5, Informative)
but electrical noise is actually a real problem for audio work.
Which should be dealt with at the analog end of the audio circuit.
SD cards are in the digital side. Analog and digital sides don't mix in any sane circuit design. But then this is for people that buy those Monster HDMI, Ethernet and other digital signaling cables.
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Re:Hmm, maybe (Score:5, Interesting)
a lot of noise comes from oscillating windings in chokes and coils found in dc/dc converters. they often 'sing' under load, on cheap boards. ie, ALL boards for consumer grade gear are cheap boards, today.
one of my lcd displays has a really noisy dc/dc. you can hear the physical whine it makes across the room.
so, there's physical noise but also electrical noise. in some cases, I have been told that ssd's throw more has on the 5v dc psu bus than spinning drives do! I find that amazing (in a bad way).
noise on the dc bus is not something the user would normally care about; but coil whine is something that most people can hear.
Re:Hmm, maybe (Score:5, Informative)
I've heard lots of digital noise when mixing production sound, but it's usually from cellphones and HID lamps. On one production, I had to have everyone double check their phones were off, checked all the wiring, XLR cables, etc, and found the problem was the recorder was noisy out of spec. There's a small possibility it was actually a noisy connection on the card, although I've never heard of a noisy card itself.
For those that have never done production sound, the equipment can absolutely produce noise, and you need to limit it as best as possible. Usually, the noise floor of the preamps, room, and poor mic placement will trump any beeping you might get from pro electronics, but I do not put the possibility of it in the Monster Cable category of bullshit. I believe it *could* happen, but is probably extremely rare and only in controlled ADC rooms.
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There's no switching (or otherwise) power supply in a SD card though. Not much of anything other than flash and a controller.
Re:Hmm, maybe (Score:5, Informative)
In regard to SSD's, they usually have a capacitor based charge pump inside them to boost the voltage high enough to erase the flash.
Same with SD cards... Nice and noisy on the power supply line.
Not to mention the slew rate on the ground referenced single ended data lines of an SD card, which run up to 208MHz.
Re:Hmm, maybe (Score:4, Interesting)
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There's nothing that Sony could do to make their memory card better than any generic SD card in terms of sound performance, other than printing the words "for Premium Sound" on the front and charging more for it.
You mean Sony one of the few companies who are actually manufacturing their own semiconductors are unable to change the design of their own chips? That's an interesting speculation.
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So you're going to invest a few million into designing a new SD card and the mask set for it... Yeah right.... My bet is that they might have modified the controller software to group erase operations and added a ferrite bead and maybe some extra capacitor or two in the package.
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Flash memory is a specialized business. It would take Sony huge investments to become a player in that field, even if they already have their own manufacturing capabilities.
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a lot of noise comes from oscillating windings in chokes and coils found in dc/dc converters. they often 'sing' under load, on cheap boards.
Which is to say, boards on which the chokes and coils are not potted in epoxy. Far too many of these devices are now "naked" and unpotted. It was the potting that kept them from vibrating.
I think I may have to go on a quest to pot the coils in my UPSes, they are cheap tripplites and they hum like mad bastards.
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If you've been working for 40 years then it's generally a safe assumption that any random other person is probably younger than you, especially online.
Rather than referencing your lawn though you should be highlighting that "We solved that one 30 years ago, why are you reinventing the wheel?"
Re:Hmm, maybe (Score:4, Funny)
"Because Apple has a trademark on squares with rounded corners?" /duck
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Look at the picture it of it. It has "For Premium Sound" printed right on it. (in gold, so you know it is premium)
If that isn't bait for monster cables purchasers, I don't know what is.
Hell, the thing might actually work as advertised and is shielded against electronic noise. But they know damn well that would do nothing for digital data.
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It's so i can put my music on it and get better sound quality when i play it on my car stereo.
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You should probably sit back down in your armchair.
Re:Hmm, maybe (Score:5, Funny)
Don't you dare make fun of my $120 cable elevators.
http://www.musicdirect.com/p-9... [musicdirect.com]
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So yes, those elevators do solve an actual problem. They're not the best solution (hooks and/or screws are cheaper and at least as effective, probably more so, while taking up less floorspace), but they are a solution. For suckers.
But one of the reviews says: "The damn things do lower noise, increase dynamics, remove haze, and open up the top octaves. Once you listen to their effects, even a skeptic like me has to admit that it is hard to take them back out of the system. Music sounds more like music with the Cable Elevators in place. I recommend them strongly, especially given their price!".
How can you argue with that? LOL
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Devil's advocate (pulled squarely out of my ass):
This may prove useful where you are using PWM bitbanged IO on the SDCard. A card with better internal noise reduction on the data leads could possibly be more reliable in such a setup, with faster bitbang IO rates.
Sony may be on to something there, but marketing it wrong.
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It seems relatively useless, as far as I can tell. You can buy a Zoom H4N (well regarded by professional audio guys for lightweight field recording) for $200 and just use a normal card. The electronics are all carefully shielded in professional professional gear. And of course, once the audio data is transformed into digital, there's no real issue. The data is digital at that point of course, and not subject to electronic noise.
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I'm a "professional audio guy" and an H4n owner, and my regard for it is... adequate. It's mic self-noise is probably far in excess of any SD card noise. I still bring by Sound Devices running at 192k if I have to do anything serious (though I use SD cards for that, too).
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Yeah, that's why I mentioned "lightweight" field recordings, meaning situations when you can't or didn't bring more expensive gear. I don't think any pro would use just that if they could lug in their high-end equipment - especially not the built-in microphones. I was just pointing out that even a $200 device (let alone a several thousand dollar Sound Devices field recorder) doesn't really seem to have problems with standard SD card noise, which it seems coincides with your experience as well.
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Sorry, I read "lightweight" literally. The H4n is very mass-efficient; on the other hand all the kewl kids now shop for rigs like an Olympus LS-100, mainly because the H4n only uses AAs and the Olympus recorders just have much better battery life.
Re:Hmm, maybe (Score:5, Interesting)
Higher end cards have pushed the spec a bit; but SD is not a particularly fast or high-energy bus. It's ubiquitous, cheap, low power, and fast enough, and thus wildly popular; but if somebody's SD interface is causing serious audio issues, the mere thought of what that designer's RAM bus looks like would probably cause the FCC to send out their crack team of death commandos.
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SD is not a particularly fast or high-energy bus
It is now. Most high speed signals these days are impedance match differential pairs.
SD is single ended and can run up to 208MHz these days. How much current do you need to charge a 30pf pin to 1.3V in less than 200ns Not an insignificant amount I imagine.
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I would hope that Sony knows how to shield the digital circuitry on their MP3 player. I'm still not convinced that you'd be able to do anything about audio noise level by redesigning the micro SD card. The only source of audio noise would be slow things such as page read-related current pulses, and there's not enough real estate on a micro SD board to provide a low frequency filter.
Re:Hmm, maybe (Score:5, Informative)
While I don't buy into the summary, I would caution against ever making an assumption that something isn't detectable due to its frequency.
There have been many MANY cases where inter-modulation of various signals magically puts things within the audible range. If there's a second clock source somewhere, or there's an external frequency near the fundamental then you most definitely can suddenly generate signals within the audible range.
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The primary shielding should be on the DAC - why filter only one source?. But shielding isn't all - it introduces noise to the DC current as well. Your DAC and amplifier both run on the same DC circuit and need some extra power conditioning (even in small devices) to make sure you get a clean signal.
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> playing music on if noise
You mean there is a difference with dubstep? :-) /me ducks
--
"One man's noise is another man's music (Yoshimura motorcycle muffler, Heavy Metal, Opera, etc.)
"One man's relaxation is another man's boredom (Fishing, etc.)
Re:Hmm, maybe (Score:5, Informative)
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It is a digital storage device. you are reading Zero's and One's, there is no electrical "noise", either it is successfully reading the contents or it is erroring, if you have a memory card producing errors when reading or writing then you should be replacing it. this is not some analog signal where noise is affecting what is written or read.
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I don't think they are claiming noise in the stored data (although from the articles they don't really claim anything), so much as noise that would effect a near by audio input or output. That is, say, you've got some kind of device that records an analog signals (from say a mic) to an SD card, and the act of writing to that SD card is generating noise which is then making it's way into your analog input.
I still say bullshit. This is right up there with specialty wooden volume knobs in the "maybe with scien
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Ok fair enough, But If you have a need for such clarity from audio input and outputs where other sources of noise aren't more significant then you would not be using a crappy device that suffers from such interference in the first place. It is like designing a set of racing tires for use on a 1960's junker.
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4k random write on any flash based storage device with wear leveling is hard to guarantee. You're restricted by the amount of RAM on the device (of which, Micro SD cards have very little, they're almost entirely flash memory with no room for much else) the erase block size and erase speed.
If you end up writing to a block with data already in it, the entire erase block that contains it must be copied, erased and written back. If you're lucky to have free blocks, the erase can be avoided and the data written
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If you're getting "electrical noise" through an SD card, it means it's acting like an antenna and dumping random EMR into your system-- Which is why most SD card slots are wrapped in METAL.
Wrap it in metal all you want, but if the same DC current supply is also feeding the DAC and the amplifier then shielding isn't your only concern. I'm not saying that these cards are worth paying for, but noise can come from anywhere.
10x (Score:2)
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A Class 4 full size SD card. Sounds exactly the same.
Don't get me wrong: the SR-64HXA is overpriced, but don't think that you can get a similar card for $16.
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Find a Class 10 card if you want to make a fair comparison, not Class 4
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How they store bits, internally, is not specified; but minimum write speed is obviously fairly important to people shooting video or enoug
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The root problem in such a case is that the analog lines for the sound output are grossly under-isolat
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I have had some issues with a Dell laptop, that gave off high pitched sounds when using the disk - but only while on battery. i don't know if it was the SSD it self, the controler or the LED that flashes when the disk is used,
It was probably the power supply, then.
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Listen to some loud music for a while. You'll lose those upper frequencies and won't care anymore.